Home / 69,318.40-103,977.60-68,735.20

Finding the Fourth Proportional to 69,318.40, 103,977.60 and 68,735.20

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Solution

The fourth proportional to 69,318.40, 103,977.60 and 68,735.20 is: 103,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,318.40 : 103,977.60 = 68,735.20 : x
  2. Step 2: Convert to fraction form
    69,318.40/103,977.60 = 68,735.20/x
  3. Step 3: Cross multiply
    69,318.40x = 103,977.60 × 68,735.20
  4. Step 4: Simplify right side
    69,318.40x = 7,146,921,131.52
  5. Step 5: Solve for x
    x = 7,146,921,131.52/69,318.40
  6. Step 6: Final answer
    x = 103,102.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.